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单词 UL
释义
ULUL /ˌjuː ˈel/ (Underwriters' Laboratories) a US organization which tests the safety of electrical equipment, tools, and drinking water. It makes rules for the companies that produce them. Electrical equipment that is approved by the UL has a special seal (=mark) on it.
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更新时间:2024/12/22 19:12:27